I have been horrendously remiss. What with all the medical issues and whatnot, I have fallen behind on, well, everything. Mea culpa.
Around about the time I was ever-so-gracefully kissing the dirt in Virginia, the folks at Woodruff Sweitzer and
Zinpro Performance Minerals sent me a CD-ROM about horse nutrition and their 4-Plex EQ Performance Mineral line for my
rambling genius review. I finally managed to watch it! It is in part a description of the Zinpro equine mineral line, but also a lot of information about equine nutritional needs. I was actually quite surprised how thorough and informative it was! They've done a good job condensing a very complex field (I know just enough to be dangerous) into some very useful highlights, focusing, of course, on the horse's unique mineral needs.
The disc was made up of four chapters, two focusing on your horse's nutritional needs, both generally and specifically. Included: fun facts (oh, they know my weakness...).
-The mature horse at rest drinks
5-8 gallons of water a day. On a 100 degree day, that amount will increase to
20 gallons. Put him in intense work, make that
25 gallons.
-While the energy needs of each horse vary, even very light work increases his need for fuel (calories) by 25%.
-The horse's small intestine absorbs proteins, sugars, starches, fats, vitamins and minerals.
-His large intestine absorbs (large colon) volatile fatty acids, B-vitamins, and (small colon) water.
-Minerals are generally considered in two classes: (1)
Macro -- phosphorus, magnesium, sodium, chloride, potassium, calcium, sulfur (2)
Trace -- zinc, copper, cobalt, manganese, selenium, iodine, iron
Each of these have different vital roles to play in your horse's body and many will have more than one job to do. For example,
calcium is needed for muscle contractions, bone structure, and milk production in lactating mares, while
phosphorus is used in the nervous system, for energy transfer, and helps calcium on bone and milk duty.
Looking at trace minerals,
zinc influences your horse's coat, immune system, skin & hoof function, muscle development, and appetite, just to name a few.
Now, before you go hurling things into your horse's feed pan, there are some important points to remember. Chiefly,
all things in moderation and you CAN have too much of a good thing. Selenium toxicity is very real and you can watch your horse's hooves slough off. Raise his zinc levels too high and he will be unable to absorb any copper, which he needs to run his nervous system, among other things. The zinc:copper ratio should lie between 3:1 and 5:1 to keep one from blocking the other. Which is why BALANCED nutrition is so important.
We as owners need to know what we need, too. Where I live, selenium levels are highly variable and I am also on the edge of cobalt deficient soils. If you really want to dig, check out your water as well; it can contain all kinds of minerals in differing ratios that are very much a part of your horse's diet.

I know, I know, you are already slavering about the mouth, "ZOMG, tell me where I can order a perfect mix of minerals so my horse will be a healthy champion RIGHT NOW!" That's what I thought Zinpro was going to tell me, too. Turns out, their Performance Minerals are already in many horse feeds and they do not sell them individually (quantities fed out each day would be ridiculously small). Speaking of which, they can use the word "performance" because their product has passed a certain level of research, testing, and certification, so there is some measure of security there that at least SOMEone has checked the stuff out before chucking it in a bag. Just as important though, these minerals have been formulated to be highly bioavialable to your horse -- meaning they have been bound to "carrier substances' which will allow the intestine to absorb the minerals. Otherwise, Dobbin just craps it out with the rest of the stuff that doesn't make it through the lining of his gut.
You, however, have to read your feed tag to find out if it's in your bag -- which their handy CD helps you do. While you will not often see their logo on the bag, the ingredients will contain 'zinc methionine complex, copper lysine complex, manganese methionine complex, and cobalt glucoheptanate.' Bite me, spellcheck.
There is a great deal more information contained on the CD -- you can request a copy of your own at the Zinpro website listed above and I encourage you to do so if you'd like to learn more about what makes your horse tick. It's got several great tools, including more feed bag label tips, a water analysis tool, and a link to some other health educational materials.
I'd like to thank Emily Stoutenborough for taking the time to contact me and send me the materials. My sincere apologies again for taking so darn long to actually look at them. You can be sure I'm going to wrestle down some feed tags tomorrow and start digging for information.